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target/adi_v5_swd: update cached value on write to DP_SELECT 

When the register DP_SELECT is written directly, e.g. with command
	<dap> dpreg 8 <value>
the cached value in OpenOCD is not completely updated with the new
value, thus creating issues in the following AP and DP read/write
that rely on the cached value.

Update the cached value while writing to DP_SELECT.

Change-Id: I8221b10cd6fc1fbe73e6b834b68820b43480e1a2
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4979
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
This commit is contained in:
Antonio Borneo 2019-02-28 11:31:11 +01:00 committed by Tomas Vanek
parent 380502d820
commit 420a692e0f
1 changed files with 4 additions and 1 deletions
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5
src/target/adi_v5_swd.c
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@ -211,7 +211,10 @@ static int swd_queue_dp_write(struct adiv5_dap *dap, unsigned reg,
return retval;
swd_finish_read(dap);
swd_queue_dp_bankselect(dap, reg);
if (reg == DP_SELECT)
dap->select = data & (DP_SELECT_APSEL | DP_SELECT_APBANK | DP_SELECT_DPBANK);
else
swd_queue_dp_bankselect(dap, reg);
swd->write_reg(swd_cmd(false, false, reg), data, 0);
return check_sync(dap);